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Storage Management Overview
60 NAS 4000s and 9000s Administration Guide
Advantages
■ High read performance.
■ High data availability-any two drives can fail without loss of critical data.
Disadvantages
■ Relatively low write performance (lower than RAID 5), due to the need for two sets of
parity data.
The table below summarizes the important features of the different kinds of RAID supported
by the Smart Array controllers. The decision chart in the following table may help determine
which option is best for different situations.
Table 3: Summary of RAID Methods
RAID 0
Striping (no
fault
tolerance)
RAID 1+0
Mirroring
RAID 5
Distributed
Data
Guarding
RAID ADG
Advanced
Data
Guarding
Maximum number of
hard drives
N/A N/A 14 Storage
system
dependent
Tolerant of single hard
drive failure?
No Yes Yes Yes
Tolerant of multiple
simultaneous hard drive
failure?
No For RAID
1+0, if the
failed drives
are not
mirrored to
each other
No Yes
(two drives
can fail)
- NAS 4000s and 9000s 1
- First Edition (November 2003) 2
- Part Number: 352405-001 2
- Contents 10
- About This Guide 13
- About this Guide 13
- Overview 14
- Conventions 15
- Equipment Symbols 16
- Rack Stability 17
- Getting Help 17
- System Overview 19
- Product Redundancy 20
- Deployment Scenarios 21
- NAS Server as a Single Device 22
- NAS Server Cluster Deployment 25
- Environment Scenarios 26
- User Interfaces 27
- Welcome Screen Contents 28
- NAS Server Desktop 29
- NAS Management Console 30
- NIC Team Setup 30
- Figure 7: Maintenance menu 32
- Figure 9: Shutdown menu 33
- Figure 10: Logs menu 34
- Using Remote Desktop 35
- Setting up E-mail Alerts 36
- Figure 12: Network menu 37
- Setup Completion 38
- 10. Restart the system 40
- Fault Tolerance 42
- Load Balancing 42
- Using Secure Path 48
- Clustering the NAS Server 49
- Managing System Storage 49
- Storage Management Overview 51
- P1 P2 P3 53
- Logical Drives (LUNs) 55
- Fault-Tolerance Methods 56
- Advantages 58
- Disadvantages 59
- Online Spares 61
- Partitions 61
- Utilizing Storage Elements 62
- File System Elements 63
- File-Sharing Elements 63
- Clustered Server Elements 64
- Disk Management 65
- ACU Guidelines 72
- Managing Disks 73
- Advanced Disk Management 75
- Guidelines for Managing Disks 76
- Volumes Page 77
- Managing Volumes 79
- Dynamic Growth 80
- To specify 83
- Size is in MB 83
- Scheduling Defragmentation 84
- Disk Quotas 87
- Setting User Quota Entries 88
- DiskPart 90
- Example of using DiskPart 91
- Shadow Copy Planning 94
- Identifying the Storage Area 96
- Mounted Drives 97
- Managing Shadow Copies 98
- The Shadow Copy Cache File 99
- Shadow Copies 100
- Set Schedules 102
- Disabling Shadow Copies 104
- SMB Shadow Copies 106
- NFS Shadow Copies 107
- Recovery of Files or Folders 108
- Backup and Shadow Copies 110
- Recovering a Folder 110
- User and Group Management 111
- User and Group Name Planning 112
- Managing Local Users 113
- Adding a New User 114
- Deleting a User 115
- Modifying a User Password 116
- Modifying User Properties 116
- Managing Local Groups 117
- Adding a New Group 118
- Deleting a Group 118
- Modifying Group Properties 119
- Folder, Printer, and Share 121
- Management 121
- ■ Modifying folder properties 122
- Creating a New Folder 123
- Deleting a Folder 124
- Modifying Folder Properties 124
- ■ Folder Name 125
- ■ Folder Attributes 125
- 5. Select the user or group 131
- Share Management 134
- Managing Shares 136
- Deleting a Share 137
- Modifying Share Properties 138
- UNIX Sharing 139
- Web Sharing (HTTP) 140
- Protocol Parameter Settings 141
- DFS Protocol Settings 142
- DFS Administration Tool 143
- Setting DFS Sharing Defaults 144
- Creating a Local DFS Root 144
- Deleting a Local DFS Root 145
- Publishing a New Share in DFS 146
- Publish to DFS root 147
- Storage Management 148
- Establishing Directory Quotas 149
- File Screening 151
- Storage Reports 152
- Print Services 153
- Adding an Additional Printer 155
- TCP/IP Print Server service 156
- Microsoft Services for NFS 157
- Logging Events 159
- Directory Domain Controllers 162
- NFS File Shares 164
- Figure 93: UNIX Sharing tab 167
- Encoding Types 169
- NFS Only 169
- NFS Async/Sync Settings 170
- NFS Locks 171
- NFS Client Groups 173
- Adding a New Client Group 174
- Deleting a Client Group 174
- NFS User and Group Mappings 176
- Squashed Mappings 177
- General Tab 178
- Simple Mapping Tab 179
- Explicit User Mapping Tab 180
- Explicit Group Mapping Tab 181
- Backing up User Mappings 183
- Restoring User Mappings 183
- Remote Desktop 186
- NetWare File System 187
- 7. Click OK 189
- 9. Click OK 189
- Adding Local NetWare Users 191
- Managing NCP Volumes (Shares) 193
- Cluster Administration 197
- Cluster Terms and Components 198
- Virtual Servers 199
- Failover 199
- Quorum Disk 199
- Cluster Concepts 200
- Node 1 Node 2 201
- FS1 Cluster 201
- Cluster Planning 203
- Network Planning 204
- Protocol Planning 205
- Before Beginning Installation 206
- Network Requirements 207
- Shared Disk Requirements 207
- Cluster Installation 208
- Configuring Shared Disks 210
- Creating a Cluster 211
- Adding Nodes to a Cluster 212
- Cluster Group Overview 215
- Cluster Resource Overview 216
- NFS Cluster Specific Issues 217
- Creating a New Cluster Group 218
- Creating File Share Resources 221
- Creating NFS Share Resources 223
- Creating IP Address Resources 226
- Failing Over and Failing Back 228
- Restarting One Cluster Node 228
- Powering Down the Cluster 229
- Powering Up the Cluster 230
- Remote Access Methods and 233
- Monitoring 233
- Web Based User Interface 234
- Integrated Lights-Out Port 234
- Features 235
- Manage Alerts Feature 236
- Telnet Server 238
- HP Insight Manager Version 7 238
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